Seriously though if you want to build an offensive stark with block potential i will say his second and 6th mod will be best to drop first additionally you can drop the first and last mod but i would recomend against that as both are really handy,Break defense is his most vital mod imo so never drop that,Strength and immunity are kinda needed for an offensive tank so never touch these.
OR be a Troll and get his Exclusive skill and replace all his mods with 12% dodge rate.